Twins in animal biology is a case of multiple birth in which the mother gives birth to two offspring from the same pregnancy.

Human twins are two individuals who have shared the uterus during a single pregnancy and are usually, but not necessarily, born in close succession. A fetus alone in the womb is called a singleton. Due to the limited size of the mother's womb, multiple pregnancies are much less likely to carry to full term than singleton births, with twin pregnancies usually lasting around 34 to 36 weeks. Since premature births can have health consequences for the babies, twin births are often handled with special precautions.

Twinning is common in many animal species, such as cats, sheep, and ferrets. The incidence of twinning among cattle is about 1-4%, and research is underway to improve the odds of twinning, which can be more profitable for the breeder if complications can be sidestepped or managed.

More on [ Twin ]

Twins - Twitter Search

@BullDizySquizzy the bulldog twins
davidallendos (David Villarreal) Mon, 14 Dec 2009 18:26:17 -0000
@BullDizySquizzy the bulldog twins
The twins had Roasted puréed chicken for lunch. I think they liked it. http://twitpic.com/tiggj
obxbound (Obxbound ) Mon, 14 Dec 2009 18:26:12 -0000
The twins had Roasted puréed chicken for lunch. I think they liked it. http://twitpic.com/tiggj
And Twins make 5! - A Mommy Blog: Popular Posts http://bit.ly/8kfEfB
andtwinsmake5 (Stephanie Wagner) Mon, 14 Dec 2009 18:26:10 -0000
And Twins make 5! - A Mommy Blog: Popular Posts http://bit.ly/8kfEfB
@ChristovShow no no us twins just have to look at each other to know what the other is thinking lol
BexDazzled (Rebekah Moss) Mon, 14 Dec 2009 18:25:59 -0000
@ChristovShow no no us twins just have to look at each other to know what the other is thinking lol
@mrsF5 I'm pretty sure I had Ennui last spring. I then got a part time job & pregnant with twins. Ennui cured for now.
Kate614 (Kate Hoedebeck) Mon, 14 Dec 2009 18:24:52 -0000
@mrsF5 I'm pretty sure I had Ennui last spring. I then got a part time job & pregnant with twins. Ennui cured for now.
@BamboozleBabe wow we are twins! I was thinking the same thing:)
HeatherDee92 (Heather Dyer) Mon, 14 Dec 2009 18:24:51 -0000
@BamboozleBabe wow we are twins! I was thinking the same thing:)

Subscribe to Twins RSS feed